Stephen Bechtel Jr. started working at his family's engineering and construction firm, Bechtel, in 1948. His first project was a pipeline project in Texas. He took over the top spot from his father, Stephen Bechtel, Sr., in 1960 and ran Bechtel for the next 30 years. He now serves as a non-executive member of the board of directors. His son Riley stepped down as CEO in 2014 but remains chairman. Grandson

Brendan Bechtel is president and COO. Stephen and his son are each believed to own 20% of the company. Bechtel is the largest engineering and construction company in the world with nearly $40 billion in revenue. The company builds roads, bridges, airports, rail systems and other large-scale projects around the world. Notable projects include the Hoover Dam, the Boston Central Artery/Tunnel and the Tacoma Narrow Bridge. In 2009 his foundation donated $50 million to the Boy Scouts of America to help create a 10,600-acre reserve in West Virginia.

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